#include<stdio.h>
/*
int main()
{
    char str[82] = "";
    int i = 0;
    for (i = 0; i < 82; i++)
    {
        scanf("%c", &str[i]);
        if (str[i] == '\n')break;
    }
    for (int j = 81; j >= 0; j--)
    {
        if(str[j] == '\0' || str[j] == '\n')continue;
        printf("%c", str[j]);
    }

    return 0;
}
*/

